Shears.



G. H. CUNARD.

SHEARS. APPLICATION IILE'I) APR124, 1914.

1,1 1 5,404.- V Patented 0013.27, 1914.

7H NORRIS PETERS (56., PHOTO LIT/I ,WAbH/NGYON. n 4.

GEORGE H. CUNARD, OF IRON RIVER, MICHIGAN.

SHEARS.

Specification of Letters Patent.

Patented Oct. 2'7, 19142.

Application filed April 24, 1914. Serial No. 834;,193.

To all whom it may concern Be it known that LGnoRcn H. GUNARD, a citizenofthe United States, residing at Iron River, in the county of Iron andState of Michigan, have invented new and useful Improvements'in Shears,of which the following is a specification.

The invention relates to shears of the type intended for cutting textileor like fabric, the purpose being to provide a pair of shears which isautomatic in operation in so far as the operator is not required tomanipulate the blades in the ordinary way, it being required. only tomove the device over a surface with a rotary tractor in contact withsuch surface and driven thereby, suitable connections between suchrotary tractor and pivoted shear blades serving to operate the latter bya pivotal movement, the cutting being effected in the ordinary way bythe closing of the blades upon the goods arranged between them.

The. invention consists of a pair of shears embodying a relatively fixedblade, a movable blade pivoted to the fixed blade, a handle havingconnection with the fixed blade, a rotary tractorin the shape of a smallwheel mounted upon the fixed part and means for utilizing the movementof the rotary tractor for imparting oscillatory movement to the pivotedshear blade as the implement is run over a surface with a rotary tractorin contact therewith.

The invention consists of the novel fea tures, details of constructionand combination of parts, which hereinafter will be more particularlyset forth, illustrated and claimed.

In the drawings hereto attached :-Figure l is a side view of a pair ofshears embodying the invention showing the relation of the parts whenthe blades are closed. Fig. 2 is a view similar to Fig. 1 showing therelation of the parts when the blades are open. Fig. 3 is a top planview. Fig. 4 is an enlarged section on the line 00-00 of Fig. 1.

Corresponding and like parts are referred to in the followingdescription, and indicated in all the views of the drawings, by the samereference characters.

The shears comprise two blades 1 and 2 which are pivotally connected,one of such blades being relatively fixed and the other movable. Ahandle 3 is connected with the fixed blade 1 and is offset therefrom soas to occupy a position above the surface upon which the blade 1 may beresting when the implement is in use. By having the handle 3 offsetvertically ample clearance is had for the fingers of the hand when thedevice -is gripped and passed over the surface sup' porting the goods orarticle to be cut. A hollow screw 4' is threaded into the fixed blade 1and is formed with a shoulder 5 intermediate of its ends, such hollowscrew forming a pivot fastening for the blade 2, the shoulder 5 beingcountersunk into a pivoted blade so as not to be in the way. A smallwheel 6 is mounted upon a pin or stud 7 set into the handle 3 and theouter edge of such small wheel is roughened or covered with rubber orother material to insure positive engagement between such wheel and thesurface thereby preventing slipping and insuring rotation of the wheelwhen moving the shears over the surface upon which the goods or articleis placed to be cut. The wheel 6 constitutes the rotary tractor which isutilized as means for imparting an oscillatory movement to the pivotedblade 2.

The means for transmitting movement from the rotary tractor to thepivoted blade 2 consists of a lever 8 which is mounted upon the outerend of the hollow screw 4 and is retained in place thereon by means of ascrew 9 threaded into the hollow screw 4. The rear end of the lever 8curves .upwardly and is connected by means of a wrist pin 10 with therotary tractor 6. A slot 11 is formed in the bend of the lever 8 andreceives the projecting end of the hollow screw 4 upon which such leverpivots and slides. A slot 12 is formed in the outer end of the lever 8and receives a fastening 13 which is let into the blade 2 at a pointintermediate of its ends. When the rotary tractor 6 is in operation thelever 8 receives a combined longitudinal and oscillatory movement, thelatter being imparted to the pivoted blade 2 whereby such blade opensand closes and cuts a fabric or other article that may be placed betweenthe blades. The parts are so arranged that when the blades 1 and 2 areclosed the forward ends thereof stand apart slightly thereby retainingthe goods in place and preventing the same from passing over or beneaththe blades.

In the operation of shears embodying the invention the goods to be outare spread upon a surface such as a table or counter and the shears arearranged with a portion of the goods passing between the blades 1 and 2after which the handle 3 is gripped in the hand and the instrument movedover the surface with the rotary tractor in contact therewith wherebysuch rotary tractor.

is set in motion and the blade 2 caused to oscillate thereby cutting thegoods which may be rapidly, effectively and conveniently performed sinceall that is required of the operator is to exert sufiicient pressure tohold the rotary tractor in engagement with the surface and to move thedevice over such surface.

From the foregoing description, taken in connection with theaccompanying drawings, the advantages. of the construction and of themethod of operation will be readily apparent to those skilled in the artto which the invention appertains, and while I have described theprinciple of operation of the invention, together with the device whichI now consider to be the best embodiment thereof, I desire to have itunderstood that the device shown is merely il1ustrative, and that suchchanges may be made when desired as are within the scope of theinvention as claimed.

Having thus described the invention, what is claimed as new is l. Shearscomprising a relatively fiXed blade having a handle in connection therewith, a movable blade pivotally connected with the fixed blade, a rotarytractor and a lever mounted in line with the pivot connection betweenthe blades and having one end connected with the rotary tractor and itsopposite end connected with the movable blade.

2. Shears comprising fixed and movable blades pivotally connected, ahandle having connection with the fixed blade, a rotary tractor, a levermounted in line with the pivot connection between the two blades andhaving an oscillatory and a sliding movement, means for connecting oneend of the lever with the rotary tractor and other means connecting theopposite end of such lever with the pivoted blade.

3. Shears comprising fixed and movable blades pivotally connected,ahandle having connection with the fixed blade and offset therefrom in avertical direction, a rotary tractor. a lever mounted in line with thepivot connection between the two blades and adapted to receivea'combinedoscillatory and longitudinal movement. such lever having itsrear portion curved upwardly, a

wrist pin connection between the rear end i of the lever and the rotarytractor and a pin and slot connection between the front end of the leverand the pivoted blade.

l. Shears comprising relatively fixed and pivoted blades, a hollow screwpivotally connecting the blades and having one end projecting and formedwith a shoulder to engage the, pivoted blade, a handle having connectionwith the fixed blade and offset therefrom in a vertical direction, arotary tractor, a lever having its rear portion Witnesses:

EDWARD P. Lo'rT, JosnrH KoPUsTA;

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents.

Washington, D. G.

